The next-generation of gravitational-wave detectors, Cosmic Explorer [1]} and Einstein Telescope [2]}, [3]}, are proposed to be operational by the mid-2030s.
These detectors are expected to be 10 times more sensitive than current advanced LIGO  and VIRGO [4]} observatories.
This allows the next-generation of gravitational-wave facilities to observe compact binaries coalescences throughout the universe.
The observation of gravitational-waves from diverse astrophysical sources opens avenues for novel scientific discovery and astrophysical understanding, which has been articulated the GWIC 3G Science Book [5]}, the Einstein Telescope Science Case [6]}, and the Cosmic Explorer Horizon Study [1]}.
In particular, the Cosmic Explorer Horizon Study identifies three key science goals—mapping the cosmic history of merging black holes and neutron stars, exploring the nature of extreme matter through neutron star mergers, and testing fundamental physics and gravity in the strong-field regime.
These science goals rely on observation of gravitational-waves from different astrophysical sources or astrophysical processes.
The prospects of their observation depend on the sensitivity of Cosmic Explorer facilities in the relevant frequency band.
